dev.knotless.label

Kept in the account of whoever labels, one per pull or issue, keyed `<repo key>.<hash of the subject's URI>` and rewritten as they change; for a private repository, in their repo inside its space. Readers honor it from the repository's owner and collaborators, and from its triagers for the scopes named, and only for labels the repository defines. Each label stands as the latest of everyone's entries for it says, by `setAt`; of a scope's exclusive labels, only the latest set stands.